Zero Hour fires your bid in the final 3 seconds. From your browser, with your cookies, on your IP. We never see your credentials. We never could.
Works in Chrome, Edge, Brave, Opera, and Vivaldi. Firefox in v1.1.
Free download from the Chrome Web Store, which also covers Edge, Brave, Opera, and Vivaldi. No signup. No email. If you're already logged into eBay in your browser, you're ready to snipe in 12 seconds.
The injected button appears on every eBay listing. Pick a max bid. Set the lead time. Walk away.
The extension wakes up three seconds before the auction ends, reads your eBay session cookie, and fires a standard bid through eBay's normal endpoint. A system notification pops up the instant the result comes back: WON · Game Boy Pocket · $112.50.
All figures verified against each provider's published terms and pricing as of 2026-05-18. We do not claim things that aren't true. If anything below is out of date, tell us.
| Zero Hour | Gixen | eSnipe | Auction Sniper | Myibidder | |
|---|---|---|---|---|---|
| Requires your eBay password | Never | Yes | Yes | Yes | Yes |
| Stores credentials on their server | Never | Yes | Yes | Yes | Yes |
| Bids from your own IP | Yes | No | No | No | No |
| Account signup required | None | Yes | Yes | Yes | Yes |
| Free tier | Yes | Yes · ads, 60s delay | Yes | Yes | Yes |
| Paid plan | $2.95 / mo · $49 lifetime | $2.95 / month | 1.5% of win price | 1.95% per snipe | $0.20–$10 per snipe |
| Browser extension | Yes · native | Third-party only | No | No | Yes (older) |
| Source code readable on your machine | Yes · unminified | No | No | No | No |
Gixen: gixen.com. eSnipe: esnipe.com. Auction Sniper: auctionsniper.com. Myibidder: myibidder.com. All competitor data reflects publicly available terms at time of writing.
Most snipers hide their trade-offs. We don't. The privacy model (your browser does the bidding) means a few things only your machine can give us.
If you close your browser before the auction ends, no one fires the bid. We can't either. We don't have your password, so there's no server-side fallback. That's the trade-off for total privacy.
macOS: caffeinate -d in Terminal, or System Settings, then Lock Screen, then set display sleep to Never. Windows: Power & sleep, then set sleep to Never while plugged in. Set it and forget it on auction day.
If you haven't visited eBay in months and your cookie expires before the snipe, the bid won't fire. Solution: sign in once, browse anything, you're good for weeks. We notify you the moment a cookie expires.
"Sniping is permitted by eBay and is not forbidden by its rules. eBay's official position is that the practice does not violate any of the site's policies."
In 2002 a Berlin court explicitly struck down eBay Germany's brief attempt to ban sniping. The practice has been protected legally and in policy ever since. Zero Hour places a standard bid through eBay's standard endpoint, at the moment that gives you the best chance to win.
Yes. eBay's own terms permit last-second bidding. Wikipedia summarises it directly: 'Sniping is permitted by eBay and is not forbidden by its rules.' Several eBay-affiliated sniping services exist that would not be possible if sniping were against the rules. Zero Hour places a normal bid through eBay's standard bid endpoint, just in the final 3 seconds rather than days before.
No. Zero Hour has no password field anywhere in the extension. Bids fire from your own browser using your existing eBay session cookie. That's the same cookie that keeps you logged into eBay when you open ebay.com in a new tab. We don't ask for credentials because we don't need them.
Every other sniper is a server-side service. You give them your eBay username and password, and their server signs into your account and places the bid for you. Zero Hour runs entirely on your machine. There is no Zero Hour server that ever talks to eBay. Your password never leaves your computer because it was never asked for in the first place.
Yes. Chrome must be running and your computer must be awake at the moment your snipe is scheduled to fire. We're upfront about this on the install page. macOS users can use 'caffeinate -d' in Terminal, or System Settings, then Lock Screen, then set display sleep to Never. Windows users adjust Power and sleep settings. This is the trade-off for never trusting a third party with your account.
The snipe fails with status 'auth_required' and you get a Chrome notification telling you to sign back into eBay. As long as you've used eBay in the same browser in the last few weeks, the session usually stays valid. Re-signing in is a one-tab job, and existing snipes resume immediately.
There is nothing in the bid request that looks different from a normal manual bid placed seconds before close, because it is one. Zero Hour does not spoof, evade, or automate anything beyond the timing of a single POST. eBay's own bidding infrastructure handles the rest.
One active snipe at a time, unlimited completed history. Most users discover they're sniping multiple auctions at once within a week. That's when Pro pays for itself.
Two options. $2.95 a month, cancel any time. Or $49 once for lifetime with no renewals and no expiry. Both unlock unlimited active snipes. We use Stripe Checkout; no card data ever touches Zero Hour.
Because privacy claims are worth what they can be verified against. Right-click the Zero Hour icon, choose Inspect popup, open Sources, and you'll read the actual JavaScript running on your machine. Not a minified blob, not a separately published mirror that could drift from what's installed. This is rare in browser extensions. We think it should be the standard.
Yes. Zero Hour supports ebay.com, ebay.co.uk, ebay.com.au, ebay.de, ebay.fr, and ebay.ca. The extension uses each region's standard bid endpoint.
No. The extension does not embed any analytics SDK or tracking pixel. The only network request it ever makes to our servers is an anonymous entitlement check (an opaque install UUID mapped to 'free' or 'pro'). Nothing else. Our marketing site uses Vercel Web Analytics, which is cookieless and aggregated.
Nothing. Your snipes live in chrome.storage.local on your own machine. If we vanish tomorrow, your last 100 won-auction records stay on your computer. There is no Zero Hour cloud to lose.